Finding the Fourth Proportional to 13,825.43, 19,079.60 and 7,858.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,825.43 : 19,079.60 = 7,858.10 : x
2. Step 2: Convert to fraction form
   13,825.43/19,079.60 = 7,858.10/x
3. Step 3: Cross multiply
   13,825.43x = 19,079.60 × 7,858.10
4. Step 4: Simplify right side
   13,825.43x = 149,929,404.76
5. Step 5: Solve for x
   x = 149,929,404.76/13,825.43
6. Step 6: Final answer
   x = 10,844.47